Qt resources not displaying when building with cmake (windows) - c++

Question

I have a Visual Studio Qt solution that I am moving to Cmake.
Everything is compiling and working fine, except all icons (.png) that I have in *.qrc file are not displayed at all.
My CMakeLists.txt is standard for a Qt project:
...
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_AUTOUIC ON)
set(SOURCE_FILES ...)
set(HEADER_FILES ...)
set(UI_FILES ...)
set(RESOURCE_FILES resources/res.qrc)
add_executable(project WIN32 ${SOURCE_FILES} ${HEADER_FILES} ${UI_FILES} ${RESOURCE_FILES})
find_package(Qt5 REQUIRED COMPONENTS ...)
target_link_libraries(project PRIVATE Qt5::Core etc...)
I think that all icons are in fact embedded into .exe, because:
1. If I remove all paths from the qrc file and recompile, the .exe size is decreased by the icons size
2. I checked the qrc_*.cpp generated by AUTORCC and all the images are there.
But when I am iterating over all my resources using this code snippet
QDirIterator it(":", QDirIterator::Subdirectories);
while (it.hasNext()) {
qDebug() << it.next();
}
the icons are NOT there.
I have tried an alternative approach with qt5_add_resources() instead of AUTORCC and the result is the same.
I also have all the iconengines, imageformats, platforms, styles folders on the same path as .exe.
Edit:
Added the whole Cmake part of the project to github.

Answer 1

Considering the discussion we had in your post comment, CMake works as expected and the resources are loaded into your application.
As you mentioned "When I run my app from clion it shows the images. If I copy the exe to a folder with *.dll etc it doesn't.", so either:
Some files are missing when you copy them, you should try to use windeployqt to correctly copy what's needed at runtime
Or the problem comes from the way the qrc is neing loaded, then, I suggest that you debug the content of qrc_*.cpp files (your can debug it after you copied it outside clion) and see why it fails to load the resource
Anyway this looks more like a deployment issue than a configuration/compilation issue.